Love型槽波的基本特性研究

摘要

Taking the three-layered symmetrical strata model as example, to solve Love mode channel wave dispersion equation, based on the model parameters plotted Love mode channel wave dispersion curves and derived amplitude depth distribution equation. On these bases we have analyzed the wave energy distribution pattern in coal and coal filtering characteristics. The study has shown that the wave is provided with dispersion characteristics, propagation velocity changes along with frequency, and energy distribution in coal seam is uneven, strongest in the center;coal filtering on the wave is analogous to high-pass filter.%以三层对称地层模型为例，求解Love型槽波频散方程，并根据该模型参数绘制了Love型槽波频散曲线，以及振幅深度分布方程。在此基础上分析了Love型槽波在煤层中的能量分布规律与煤层对Love型槽波的滤波特性。研究表明：Love型槽波具有频散特性，传播速度随频率发生变化，且在煤层中能量分布不均匀，煤层中心能量最强；煤层对Love型槽波的滤波作用类似于高通滤波器。